''Glyptaesopus oldroydi'' is a species of
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a marine
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk in the
family Borsoniidae
Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet, P. (2011). Borsoniidae. Accessed through: World Register of Marine Species at http://www.marinespecies.or ...
.
[Bouchet, P. (2015). Glyptaesopus oldroydi (Arnold, 1903). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=759718 on 2016-03-10]
Description
The size of an adult shell attains 9 mm, its width 2.6 mm.
(Original description) The small shell is slender and has a fusiform shape. The
spire is elevated. The
apex is rounded. The shell contains seven convex
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s. The first three whorls are smooth. The remainder, with exception of the
body whorl
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk.
In gastropods
In gastropods, the b ...
, are ornamented with about eighteen transverse ridges and two or three rather indistinct spiral grooves, the whole giving a cancellate appearance to the surface. On the body whorl the transverse and spiral
sculpture are of about equal prominence, the transverse sculpture being more subdued than on the whorls above it. The suture is quite deeply impressed. The
aperture is narrow and elliptical. The
columella is truncated anteriorly. The outer
lip is smooth and thin. The inner lip is smooth.
Ralph Arnold, The Paleontology and Stratigraphy of the Marine Pliocene and Pleistocene of San Pedro, California; Memoirs of the California Academy of Sciences 1903 v. 3 p. 238
/ref>
Distribution
This marine species occurs in the Pacific Ocean off Panama.
It was also found as a fossil from the Lower Pleistocene of San Pedro, California.
References
* Arnold, Ralph. ''The paleontology and stratigraphy of the marine Pliocene and Pleistocene of San Pedro, California. Vol. 3''. The Academy, 1903.
* Keen, A. M. 1971. ''Sea Shells of Tropical West America. Marine mollusks from Baja California to Peru,'' ed. 2. Stanford University Press. xv, 1064 pp., 22 pls.
External links
*
W.H. Dall (1908) Reports on the Mollusca and Brachiopoda, Bulletin of the Museum of Comparative Zoology at Harvard College. vol. 43
Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the Conoidea. Journal of Molluscan Studies 77: 273–308.
{{DEFAULTSORT:Glyptaesopus Oldroydi
oldroydi
Gastropods described in 1903
Molluscs of the Pacific Ocean